I recently purchased a Leupold BR 24X Scope. When I got it home, I realized it has the distance scale on both the focus (AO) ring and on the bell. When you turn the AO ring, the two sets of numbers pass by each other with no reference zero anywhere. So, how do you read the distances so that you know where the heck you are focusing? Due to a disability, I cannot look through the scope, while operating the AO ring, so I need repeatable settings.